U-601965, Annual Environ Operating Rept,1991

Annual Environ Operating Rept,1991

ML20101B089
Person / Time
Site:	Clinton
Issue date:	12/31/1991
From:	Spangenberg F ILLINOIS POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
U-601965, NUDOCS 9205050326
Download: ML20101B089 (27)

Text

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4 .1 i lilinois Power Company-

., y-9-. 3.: -

Clinton Power Station -

P.O. Box 678 Chnton, IL 61727: -'-

Tel 217 935-888 i LL N9ES. o.601963 P@MR L30 92(04-29 )LP 1A.120 April 29, 1992 Docket-No. 50-461

-Document-Control Desk-

, Nuclear.. Regulatory Commisslan Washington,-D C. .20555 ,

Subject:

Clinton Power Station Annual Enviror.iental Operat t er Report-'

2.

Dear Sir:

In'accordance with appendix B to Facility Operating License NPF-61,

' Illinois Power (IP) is cubmitting the Annual Environmental' Operating Report

--(Attachment 1). This report covers the period January 1,1991 through

-c  : December 31,.1991.

Sincer ly yo rs, -

dl F. A.-Spangenberg, III.

Manager, .Licensir.g' and Safety.-

WSI/alh Attachments-- 5 cc: - NRC:Clinton Licensing. Project Manager hTC Resident Office Regional Administrator, Region III, USNRC i

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• - Page - 1 of .11=

. Annual Environmental Operating Report The Environmental Protection Plan (EPP) for Clinton Power Station (CPS) requires that the Annual Environmental Operating Report include: r (A) A list of EPP noncompliances and the corrective actions taken to remedy them.

(B). A' list of all changes in station design or operation; tests, and experiments made in accordance with subsection 3.1 of the EPP which involved a potentially

~

significant unreviewed environmental issue.

_(C) A list of non routine reports submi tted in accordance with subsection 5.4.2 of the EPP.

(D) Any results and/or assessments for the environmental monitoring programs described in subsection 2.0 of the-EPP which were submitted to the respective regulatory agencies during the annual' reporting period.

The following provides the Illinois Powcr response to each listed

~

item.

A. Listing of EPP noncompliances and corrective actions:

1)- Noncompliance:

Two-water samples obtained from outfalls 004 (Transformer Area Oil / Water: Separator)_and 005 (Diesel Generator Oil / Water Separator) resulted in an oil and grease concentration _of 22 parts per million_(ppm) and 42 ppm respectively and resulted in a-30-day average of 16,1 ppa, which exceeded -he National-Pollutant Discharge Elimination System (NPDES) permit allowable value of 15-ppm.

Corrective Action:

A Maintenance-activity had been performed on these oil / water separators. This activity included lowering the water level 11n the separators with a portable pump.

The pump had been left on too long and oil / grease was taken.into the_ pump and discharge line. -When the pump was'used again, the-residual fluid was flushed from the pump and1 discharge line. Corrective action to prevent

recurrence included training appropriate Maintenance -

Department personnel to increase their understanding of separator operation and providing directions to ensure a

[ clean pump and discharge line are used for the operation.

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Attachment'l i

• Page 2 of 11

2) Noncompli DP.E: E  :

On January 16, 1991, the cample analyzed for Biochemical Oxygen Demand (20D) for outfall 002a (Sewage Treatment Plant Effluent) resulted in 72mg/l (the limit is 60mg/1),

92IIfillve Acti D: 2 The January 16th sample analynis was determined to be an l isolated case (possibly from the recent cicaning of i sewage treatment system digester plates). Sample l analysis on January 23rd and 30th resulted in 27mg/l and 39eg/1. respectively.

S

3) Noncompliance:

The re' order utilized for continuous monitoring of the temper,tute-for outfall 002 (Discharge Flume) was found to have been inadvertently left in the "0FF" posit.on.

Cpriective Actiqn:

The chemistry technician involved was counseled on the  ;

importance of ensuring the temperature recorder is left in the *0N" position and is operating prior to leaving '

the area, 4)- Ennpompliarign: ,

The temperature reenrder located in the DischatSe Flume Monitoring Building ceased to function, resulting f u a loss of the capability to continuously monitor outfall 002 (P'scharge Flume) temperature, Corrective AellnDi S

The temperature recorder was returned to service. . The investigation determined that the probable cause of the

inoperability of the temperature- recordor was a 6 lightning strike on or near the Discharge Flume  ;

! Monitoring Building.

l-i

5) Npncomp1hp_ca:

i-t On May 5,1991, grab samples were not cbtained' at outfall a 2 (Discharge Flume) for the determination of residual ahlorine when the chlorine monitor was  ;

inoperable. A manual residual chlorine curve was not l performed because the monitor was expected to be  ;

returned. to' service before the end of the week, which l would have fulfilled the appropriate requicements of the  !

NPDES permit. Powever, due to unforeseen complications, the monitor was not returned to scruice until after the Operations Group injected chlorine.

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. Attachment 1 ,

Page 3 of 11 i i

CRIKg.c t ive A'2 t i on:

Chemistry supervision was counsel-d on mainta!ning enhanced communication with the Operations Group to j ensure compliance with the requirements for monitoring chlorine injections during periods of monitor inoperability.

6) Noncompliance: .

The Discharge Plume Continuous Chlorine Monitor for ,

outfall 002 was inoperabir Grab samples were being ,

obtained every fif t een rinutes and not every five ,

minutes as required by condition three of the NPDES .

permit. l corrective.ActlGD '

All chemistry technicians were counseled on the time requirements for obtaining samples for periods when the continuous chlorine monitor-is inoperable.

7) Nonconollaung:

A water samplo obtained from outfall 005 (Diesel

'Cenerator Oil / Water Separator) wsulted in an oil and grease concentration of 83 ppm. The reruits of the analysis exceeded'the maximum daily oil and grease (ancentration in this outfall of 20 ppm and a 30-day average concentration of 15 ppm.

Corrective Action:

Due to a concern with operating the pumps which remove-the water from the separator, the vator was baing removed with a portable pump. The portable pump and hose had apparently been stored with oil and grease.

remaining in them from when they had last'been used - No oil reached Clinton Lake due to an oil absorbent boom being niaced across the outfall. A new pump and hose was procured and dcdicated solely for the task of removing the water from the oil separator.

8) Honcomplianqs:

A sample taken-from._catfall 004 (transformer area oil / water separator) did not contain the proper preservative as required by the Environmental Protection l_ Agency procedures. The lack of the preservat.ive invalidateu the sample, Since, due to time restraints,

'. a second sample could not be taken to fulfill the permit requirement for the week, a noncompliance with the NPDES permit occurred.

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Ggtrective ActioD:

j Sample bottles utilized for NPDES sampling are prepared '

by the central laboratory personnel. This preparation ,

includes sample bottle cleaning, labeling and the ,

addition of the required preservative. The chtimistry '

personnel responsible for obtaining the samples were instructed to ensure the bottles are proporly labeled and contain the preservative. Also, they were directed not to rinse the bottles prior to obtaining the samples. }

9) U2DS2321jnnee:

The chlorJne concentration for outfall 002 (discharge l fiume) exceeded the NPDES permit limit of 0.2 ppm when the concentration reached 0.25 ppm. The cause of this  ;

problem is suspected to be an unanticipated drop in l chlorine uptake. This drop in chlorino demand was '

y associated with a 1.5 degree Fahrenheit drop in the i flume temperature and a suspected significant dc crease in biological uptake of chlorine.

[

G2Lrective Action:

! The amount of chlorit.a and the flow rates at which the chlorine was injected were.the same as for the previous three days when the NPDES permit limits were not exceeded. Since this was the first time that a decrease in the biological uptake of chlorine resulting from a drop in temperature was the suspected cause of exceeding the allowed chlorine concentration, continued monitoring o

was determined to be the most appropriate action to take.

i

10) Noncompliance:

A sample obtained from outfall 004 (Transformer Area  !

Oil / Water Separator) resulted in an oil and grease concentration i 40 ppm. This was the only sample for L

the sampling period. Consequently, both the NPDES limits for the daily maximum and 30. day average were exceeded.

Corrective Action:

The oil /wat er Invel in the separator had been lowered in response to prcblems identified with the inist line to the separator, During the evening,-the area around CPS.

-experienced heavy rain which caused a large volume of L water to enter the separator causing the existing fluids l_ co mix and. exit.from the separator. Va c. ious containment / oil absorbent booms were installed to ensure oil was not discharged into Clinton Lake from this  !

source. In addition, the inlet line was repaired, WSI20:WS14 e -& ww .,. 4-,, .ws,.--%u.h .o ,m... ..,.,w . -. _ _ . . . . # -..--.-,__...m,-.......__w , , , . . - .

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• Page 5 of 11

11) Noncomotinnee:

A NPDES noncompliance occurred during chlorination of the Shutdown Service later (SX) system. This evolution is completed by injecting sodiu.? hypochlorite into the Plant Service Water ("O aym n . The task is

accotoplished by opentiu the etess-tie valven between VS and SX. SX discharges to outfall 007 (Safe Shutdown Service Water System). This chlorination was being perforsted in order to control microbial activity which had been previously identified in the emergency diesel generator heat exchangers. The concentration of chlorine discharged into outfall 007 was not to exceed 0.05 pprn. maximum. The average chlorine concentration-for the duration of the chlorination event was not to-exceed 0.2 ppin. Due to the location of outfall 007, it cannot be sampled at the discharge point to determine the concentration of chlorine entering Clinton Lake; therefore, other-(roore conservative) locations on the WS and SX systems were monitored for chlorine concentration which would be expected to result in higher  !

concentrations than discharged from outfall 007. The maximurn chlorine concentrations observed at the three -

different sampling points were 1.4 ppm, 2.1 pptn, and $.7 ppm.

,Qorrective Action:

The chlorine injection time was 3$ 40 minutes.. The +

magnitude of th'. initial level of chlorine observed was unexpected and the chlorine injection was immediately suspended. The cause of the noncotopliance was an '

inability of Chemistry personnel to adequately control the volume of sodi"m hypochlorite being injected into US and SX. This was sle to a design inadequacy in the modification installed to perform-WS chlorination (i.e.,

there was not a properly sized ~ metering valve installed in the chlorination system). All chlorination into US was subsequently suspended until a proper metering valve

-was installad in the chlorination system, The exact concentration of chlorine injected into Clinton Lake is not known, but it-is less than the maximum levels observed at the three sampling points.

There were no negative impacts observed in the lake.

12) Noncompliance:

The screenwash fish collection basket was being cleaned when it was discovered that the side plate of the basket

- had separated from the rest of the basket. This allowed cpproximately 100 to'300 small fish to be returned to

- Clinton Lake when the traveling screens were backwashed.

The release of the fish to the-lake constituted a

- noncompliance of the NPDES permit.

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'+ a page 6 of 11 Corrective Action:

l' The side plate of the fish collection basket was innediately repaired. The fish which were returned to Clinton Lake were retrieved and disposed of properly.

B. List of changes in station design or operation, tests, and experiments made in accordance with subsection 3.1 of the EPP which involved a potentially significant unreviewed environmental issue:

No changes as described above were made in this time period which involved a potertially significant unreviewed environmental issue.

C.. -The following are non routine reports submitted in accordance with subsection 5.4.2 of the EPP:

1)' On February 23, 1991, Illinois Power reported a light-oil sheen on Clinton Lake at the screenhouse structure of CPS. The total quantity of released oil was estimated to be one quart in a sheen measuring three feet wide and 100 feet long.

The source of oil was determined to be a leaking sight glass fitting on the gearbox of the "B" traveling screen, The oil-leaked into the screenwash trough and was carried to a screenwash fish cellection basket-outside the screenhouse. . Ultimately, the oil reached Clinton Lake.

Immediate Corrective Actian and/or Counter Measures Taken:

(a) 011 sorbent booms and pads were immediately deployed to contain and collect the oil.

(b) The oil was controlled and removed.

(c) The sight glass was tightened to stop the oil leak.

(d) -Used oil sorbents were disposed of preperly.

(e) No environmental impact was noted after the cleanup of the releare.

Additional Preventative deasures Taken or P1'anned to p Minimize the Possibility of Recurrence:

The appropriate Maintenance Department personnel have been reminded to check the fittings on the traveling screen reduction gearboxes for tightness. A vibration VS120:WSI4

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' Attachment 1

> .* Page 7 of 11

, monitoring check was done on these gearboxes, and it was determined that the vibrations from operating the travell"6 screens did not contr ibute to loosening this fitting.

2) On March 1, 1991, Illinois Power reported en oil sheen-on Clinton Lake, vest of CPS. The sheen stretched across Cliuton Lake. i l

The source of tha oil was determined to be from the _)

Ultimate Heat Sink dredge barge. It is estimated that I' approximately five gallons of oil was released to Clinton Lake. The dredge barge contains multiple fuels, lubricants and hydraulic systems, it is owned and operated by an outside contractor who dredged the Ultimate lleat Sink in Clinton Lake for _ Illinois Powar.

During the past winter, the dredge barge was laid up in Clinton Lake. Oil from the barSe reached Clinton Lake and was trapped-by the lake ice which formed in early ,

January. The lake thawed about one week before the-sheen was observed on March 1,1991. The thawing of the lake surface released the accumulation of oily deposits.

There were two causes of the oil release.

1) The dred6 e barge bilge la periodically pumped out by the contractor'to remove seepwater from hull leaks. The bilge area also collects oil residue from minor leaks on the dredge. The water pumped from the bilge and into Clinton Lake contained some oil.

2) The rain washed trace oil accumulations from %e deck of the barge into Clinton Lake.

Immediate Corrective Action and/or Counter Measures Taken:

(a) A Containment boom was immediately deployed to contain the sheen. This action prevented oil from reaching. shorelines.

(b) 011 sorbents were used to' remove the oil-from Clinton Lake.

(c) The oil release was controlled and removed.

(d) Used oil sorbents were disposed of properly.

(e) No environmental impact was noted after the cleanup of the release.

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, Attachment 1 J 4

Page 8 of 11 l, t

611ditionni Preventative Meamtres TakeJ e r Planned to Minimize the Possibility of RecuIrence; {

(a) The owner and employees of the dredge barge were

. instructed to inform CPS prior to pumping the ,

bilge. ihe water level in the bilge is t.ow kept at a hi h 6 level, only enough water to keep tt.e i barge safe from sinking is now removed This  !

further reduces the chance of discharg;ng oil into l Clinton Lake. '

s (b) 011 sorbents were placed inside the bilge to removo oil. '

(c) An nil containment boom was deployed around the dredge barge and lined with sorbent booms. If oil -

were released again, the oil would be immediately contained.

(d) The deck of the dredge barge was cleaned.

3) The dredge barge used to dredge the-Ultimate llear Sink in the Clinton Lake was being dismantled on the shore of the Clinton lake. -On September 3, 1991, Clinton Power  !

Station personnel observed oil spilled on the ground l neor the barge. An oil Liain on the soil measured  ;

approximately 50_ feet-long. The oil stain was ,

approximately 40 feet from the icke. The oil was  :

spilled by the contractor from the dredge barge bilge l tank. The oil.was a mixture of lube oil and diesel fuel.

Crews were preparing to remove the spilled' oil when it began to rain. Rainwater accumulated in the bilgo tank

.and overflowed causing a release. .The oily water discharged from the bilge tank and oil residues on-the ,

ground were washed into Clinton Lake. This release occurred before crews were able to pump the bilge or clean up the spill on the-ground, The quantity of oil released to Clinton Lake was estimated to be one pint.  :

Jmmediate Corrective-Action and/or Counter Measures '

Taken s

.(a) Oil sorbent bcons and pads were immediately deployed to contain and collect the oil.

'(b) Booms were used to protect additional shorelines from the oil.

1 (c) 011' on the ground was scraped from the surface. -)

l (d) All oil and water was pumped from the bilge tank.

. -l

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• =* Page 9 of 11 l

'(e) t! sed spill materials and the affected soil were l

-disposed of properly. j i

(f). The oil and water inixture was pumped into a tanker i and the mixture was separated. The water was l analyzed and properly treated at Illinois Power's central laboratory. The oil was properly managed in accordance with the CPS waste oil prograrn.

.( g) No environmental impact was noted after the cicanup of the relears.

Additional freventatJve Menstyres Taken or Planned to Minimire-the Possibiliry of Recurrencel All components of the barge were removed by September 13.-1991. With the removal of the barge. the risk of another oil spill from the barge was also rernoved.

4) An oil / water separator located at CPS was taken cut of -

. service to perform maintenance. Before the need for in.i.intenance was identified, plant personnel observed a manhole. filling with water. The inanhole is located immediately upstream of oll/ water separator number one (OSI).. The normal path of water frorn this manhole discharges directly to OS1, Since the uanhole was filling with water, plant pe=rsonnel believed that the-manhole ~ outlet was plugged, .Vhen trying to auger'the pipe between the manhole and 0$1, plant personnel r learned the blockage was located at the separator. The separator was taken'out of-service and the contents of the separator were pumped.- The~ blockage.was found-to be caused by poured = concrete. The 15 inch pipe had a 13-

.ir.ch concrete blockat,e. -The poured concrete blockage occurred during construction of the separator. .

On September 3, 1991, it rained. Since_the manhole was n blocked,' the rainwater should have accumulated in the. .,

area of the manhole. It was the plant's intent t.1 pump the rainwater to.0S2. .During the separator-inspection. -

lt it is believed that a small portion of the blockage dislodged and some of the rainwater entered OSI.._Since the contents of 051 were removed for maintenance, the p separator did.not have its water barrier'present while it wasifilling with water. Some oil residues were discharged from the separator and drained to Clinton

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1.ake.

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Attaciunent 1

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• Page 10 of 11 Immediate Corrective Action and/or Counter Meauffe,s lekent (a) 011 sorbent boorns and pads were deployed to contain and remove the sheen frorn Clinton Lake.

(b) 011 sorbents were used in the discharge drainage channel to collect and remove oil residues.

(c) An underflow dam was constructed in t.he discharge drainage channel to Clinton Lake. The underflow dam provided a means to collect all floating products and prevent their discharge to Clinton Lake.

(d) All traces of oil were removed.

(e) No environmental impact was note <1 after the-cleanup of the release.

Mditional Pyfyfntative Measures Taken or Planned to Minimize the Possibility oflecurrenes,1, (a) OSI maintenance was completed.

(b) The underflow dam remained in place through the duration of the OSI maintenance. This provided additional protection during the~ maintenance of the separator.

D.- Results and/or assessments Cor the environmental monitoring ptograms described in subsection 2.0 of the EPP which were submitted to the ' respective regulatory -

agencies during the-annual reporting period:

-1. Additional 1990'Clinton Lake Naecleria fowleri Monitoring and Clinton Lake- ,

temperature data was_provided to the-- '

Illinois Environmental. Protection Agency on June 18 1991. Out of 400: samples collected in 1990,-there were fifteen positive samples of Naerleria fowleri (five botcorn samples and ten surface water samples). The warmest lake water temperature was_88.6'F near Mascoutin Beach on September 6, 1990.

Complete information is provided-in Attachment 2,

2. The Clinton Lake-sed _imentation survey for 1991 is provided in Attachment 3. %e survey measured-the-1991 depths note the-Parnell Road ~ Bridge and'the DeWitt County Highway 15 Bridge.

L WS120:WSI4 e 3

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3. Illinois Power completed the dredging' ,

operations of the CPS Ultimate 11 eat Sink on January 7, 1991. Attachment 4 is the notification of p oject completion to the Ariny Corps of Engineers. Attachment 5 is the Clinton Power Station Ultimate !! eat Sink ,

Dredge Disposal Impoundment Subruittal.of i Abandonment Plan, i

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y' Attachment 2 June 18, 1991 Clinton Lake 1990 Monitoring Report for Naegleria, fowleri Purpose This report summarizes the 1990 Naeoleria fowleri monitoring data and water temperatureT7im~the Clinton Lake Besch.

Methods and Materials Water and sediment samples for Naegler_1a fowleri were collected from 10 locations (Figure 1) on seven dates in 1990. Samples were collected in triplicate and temperatures werc recorded at the time of collection (Table 1). Lake temperatures were characterized by temperatures recorded on hourly intervals by Datasondes at six locations in Clinton Lake (Figure 1) . Sample analysis and amoebic isolations were similar to those reported in 1988 by Dr. Huizinga in the " Survey of Clinton Lake for the Occurrence of Naegleria fowleri". All field collections and temperature monitorings were performed. by 1111nois Power's Biological Programs staff and all samples were analyzed by Dr. harry Huizinga of Illinois State University.

Results and Discussion A total of 400 samples were collected in 1990 and Naegleria fowleri were isolated from fifteen bamples (3.8%)

(Table 2T. The percentage of Naeglerin fowleri was lower than the 5.1% found in 1989 and the 5.3% in 1988.

The distribweion of Naegleria fowleri was limited to Sites 1, 2, and 4 which were the sites most influenced by the thermal discharge. In 1989, some Naegleria fovleri were found in areas of the lake not influenced by thermal discharges.

gemperatures at the time of collection ranged from 10 C to 37 C (Table 1). Naegleria fowleri were isolated at temperatures from 29.5 to 3 7C, witg eleven of the fifteen isolated from temperatures above 35 C. No Naegleria fowle;1 '

w;re found on July 18 following a plant outgge, which dropped discharge tempelatures more than 10 C.

Daily mean temperature at the Mascogtin Beach between May and October ranged from 11.8 to 31.4 C in 1990 (Tchle 3). Daily means for the same period in 1989 ranged from 14.1 to 32 C.

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1 Surface samples accounted for ten of the fifteen Naegleria fowleri in 1990. In 1989 bottom samples had a higher incidence (6 of 9) of Naegleria fowleri.

The abundance of non-pathogenic Neegleria species was lower than in previous years. Non-pathogenic amoeba were present in 13% of the 1990 samples, as compared to nearly 26% in 1989 and a high of over 50% in 1986.

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A Sampling sites for Naegleria e DataSonde 1ccations Figure 1. Sampling sites for 18390 Naegleria fouleri monitoring at Clinton Lake, Clinton, Illinois.

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l Table 1. Temperatures (OC) of bottom and surface water samples at the i time of ecliection from Clinton Lake, Clinton Illinois, 1990.

Sampling Dates Sites

• 06/07/90 07/05/90 07/18/90 08/01/90 09/07/90 10/03/90 10/30/90 1

14B1 19.2 26.9 24.2 24.3 27.6 19.2 11.6

]

r- 14B2 19.1 27.1 24.3 24.3 27.5 19.2 11.8 14B3 27.0 24.2 24.6 27.7 19.2 11.8  ;

14S1 19.5 27.3 24.4 24.6 27.8 19.3 11.7 14S2 19.5 27.3 24.5 24.6 27.7 19.3 11.7 1453 27.2 24.4 24.6 27.8 19.3 11.7 13B1 19.1 27.2 24.1 23.7 27.4 19.1 11.6  ;

13B2 19.1 27.1 24.0 24.1 27.3 19.2 11.6 13B3 27.0 24.2 24.1 27.5 19.2 11,5 1351 19.4 27.3 24.4 24.6 27.7 19.3 11.5 13S2 19.4 27.4 24.3 24.6 2/.7 19.3 11.5 1353 27.5 24.4 24.6 27.7 19.1 11.5 12B1 19.3 27.0 24.2 24.3 27.5 19.2 11.8 12B2 19.3 26.6 24.1 24.3 27.4 19.2 11.8 12B3 27.0 24.3 24.5 27.5 19.2 11.9 12S1 19.6 27.5 24.3 24.6 27.3 19.5 11.7 12S2 19.7 27.3 24.4 24.6 27.3 19.5 11.7 12S3 27.4 24.4 24.6 27.3 19.5 11,7 l

10B1 19.1 23.3- 23.1 24.4 25.4 19.2 12.2 10B2 19.1 23.6 23.1 24.6 25.8 19.2 12.3 1083 23.6 23.7 24.7 26.0 19.2 12.3 1051 -19.5 26.6 23.8 25.1 27.3 19.3 11.8 10S2 19.5 2'.0 23.8 25.1 27.3 19.3 11.8 10S3 27.0 23.8 25.1 27.3 19.3 11.8 l- 8B1 20.6~ 27.3 24.0 25.2 27.3 19.2 11.4 i 5B2 20.3 27.2 23.9 25.3 27.3 19.1 11.6

'8B3 27.2 24.0 25.5 27.4 19.2 11.6 h 8S1 21.0 26.6 24.0 25.6 27.6 19.2 11.4 l 8S2 20.9 27.0 24.1 25.6 27.6 19.2 11.5

~8S 3 27.0 24.0 25.6 27.6 19.2 11.5 16B1 22.4 29.2- 24.1- 26.5 29.0 21.5 11.4

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6B2 22.4' 29.2 24'0-

. 26.9 29.1 21.5 11.3 6B3 29.1: 24.0 27.0 29.3 21.5 11.3-6S1 22.7 28.6 24.0 27.4 29.6 21.6 11.1-6S2- 22.7 28.8 24.3 27.4 29.7 21.6 11.1 6S3 28.9 24.2 27.4 29.7 21.7 11.1 L

=- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ - _ _ , _ . _ _ _ _ _ _ .-~ . _ . , _ _ - _ . _ . _ , , . . _ , _ _ , ,

- .._ _ . _ _ _ . _ =. - _ _ _-_-

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Table 1. (Continued) _

Sampling Dates 3 Sites

• 06/07/90 07/05/90 07/18/90 08/01/90 09/07/90 10/03/90 10/30/90 4B1 29.5 35.8 24.5 33.0 34.3 27.1 11.9 4B2- 30.1 35.8 24.4 33.6 35.5 27.1 11.8 4B3 35.1 24.4 33.8 36.0 27.1 12.1 1 451 30.0 36.5 24.5 34.5 36.6 27.2 11.8 452 29.5 36.5 24.5 34.5 36.6 27.2 11.8 4S3 36.5 24.5 34.5 36.7 27.2 11.8 3B1 18.3 24.1 21.6 24.5 28.1 18.7 10.6 3B2 18.4 23.6 21.8 25.0 27.6 18.7- 11.0 3B3 23.5 21.5 24.6 27.3 18. 11.0- '

351 23.9 28.6 23.7 26.0 29.1 19.7 ~10.0 3S2 23.8 28.6 23.5 26.0 29.2 19.7 10.0-353 28.3 23.7 26.0 29.2 19.7 10.0

. 2B1 29.8 36.7 25.6 34.5 35.1 27.1 13.0

, 2B2 30.0 30.6 25.6 34.5 35.5 27.1 12.8 2B3 36.2 25.5 34.3 35.8 27.1 13.0 2S1 30.3 37.0 25.7 35.2 36.2 27.2 13.0 2S2 30.5 37.0 25.2 35.2 36.1 27.2 13.0 .

253 37.0 25.8 35.2 36.1 27.2 13.0 1B1 30.8 37.1 26.0 35.3 37.0 27.2 12.4 132 30.9 37.1 26.0 35.3 37.0 27.2 12.4 IB3 37.1 26.0 35.3 37.0 27.2 12.4 131 30.7 37.1 26.0 35.3 37.0 27.2 12.4 152 30.8 37.1 26.0 35.3 37.0 27.2 12.4 IS3 37.1 26.0 35.3 37.0 27.2 12.4

• The Jetter B following the site number identifies the sample as a bottom sample and the letter S identifies a surface sample.

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, , . _ _ . - _ . , _-_.-..-._..-a,.. , , . , . , , - . -

. __ _ - . . _ . _ . ~ _ _ _ . . . . - . _ . . . _ _ _ _ . _ . . . . . _ . _ . _ _ _ . . _ _ . _ _ _ _ .- . _ . . - . _ . _ _ . _ .

, t. ' ,

I Table 2. Samples positive for Naanleria fowleri and non pathogenic Naegleria e species from C1!.nton Lake, Clinton, Illinois, 1990.

Sampling Dates

• Sites 06/07/90 07/05/90 07/18/90 08/01/90 39/07/90 10/03/90 10/30/90 L

14B1- +

14P2 14B3 +

-14S1 14S2 14S3 13B1 13B2 13B3 +

1351 1352 13S3 d

12B1 .+  ;

12B2 +

'1283 ,

1251 1252 12S3 3

10B1 10B2 +

10B3 10S1' 10S2 10S3 ,

8B1 8B2 +

BB3 851 ,

8S2 8S3 p 6B1-6B2 6B3 6S1 6S2 6S3

i 1

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i Table 2. (Continued)

Sampling Dates Sites 06/07/90 07/05/90 07/18/90 08/01/90 09/07/90 10/03/90 10/30/90 i

I I

4B1 + + + +

4B2 X + + +  ;

4B3 X +

4S1 + + X X +

4S2 X- X 4S3 + +

LB1 + + + i 3B2 +

3B3 + +

3S1 3S2 3S3 2B1 + + +

2B2 X + + +

2B3 X +

2S1 X 2S2 + + X X +

253 + +

1B1 + + X +

IB2 + + + +

.1B3 + + +

' 1S1 X X X

-~1S 2 + ^

+

IS3 + +

2

- no samples collected X positive for Naegleria feweleri

+ positive for non pathogenic Naegleria species

, L\ .

Daily and veekly mean water temperatures (OF) at the Masecutin State Table 3.

Park beach at Clinton Lake, Clinton, Illinois, 1990.

Heans Heans Hoans  ;

Date Daily Weekly Date Daily Weekly Date Daily Weekly  !

05/01/90 67.1 06/18/00 82.3 08/05/90 84.5 82.9 05/02/90 68.9 06/19/90 84.1 08/06/90 82.2 05/03/90 66.0. 06/20/90 79.1 06/07/90 82.4 05/04/90- 63,4 06/21/90 81.8 08/08/90 83.1 105/05/90 63.2 06/22/90 80.2 08/09/90 83.2 05/06/90 68.1- 66.1 06/23/90 77.4 08/10/90 82.7 05/07/90 68.0 06/24/90 79.6 80.6 08/11/90 84.2 05/08/90 67.9 06/25/90 80.2 08/12/90 82.8 83.0 05/09/90'67.0 06/26/90 82.0 08/13/90 81.4 05/10/90 63.6 06/27/90 85.6 08/14/90 83.5 -

-05/11/90 64.9 06/28/90 84.9 08/15/90 82.8 05/12/90 63.5 06/29/90 82.3 08/16/90 83.S 105/13/90 62.3 65.3 06/30/90 82.3 08/17/90 83.7 ,

-05/14/90 62.5 07/01/90 83.2 83.0 08/18/90 85.0

.05/15/90 62.8 07/02/90 83.6 08/19/90- 87.2 83.9 05/16/90 63.3 07/03/90 82.2 08/20/90 86.2-05/17/90 63.3 07/04/90 83.7 08/21/90 -84.4 05/18/90 64.2 07/05/90 87.1 08/22/90 83.4 ,

05/19/90 64.7 07/06/90 84.6 C8/23/90 84.0 05/20/90 64.9 63.7 07/07/90--84.2 08/24/40 84.2 05/21/90 63.7 07/08/90 84.6 84.3 08/25/90 83.7 05/22/90 66.2 07/09/90 85.8 08/26/90 84.8. 84.4 05/23/90 67.7 07/10/90 86.8 08/27/90 87.0 05/24/90 67.5 07/11/90 84.3 08/28/90 87.0 05/25/90 67.8 07/12/90 80.2- OS/29/90 87.6

-05/26/90 69.0 07/13/90 77.3 08/30/90 86 a

-05/27/90 69.8 67.4 07/14/90 75.8 08/31/90 35./

05/28/90 69.0 07/15/90 74.8 80.7 09/01/90 84.8 05/29/90 71.4 - 07/16/90 75.5 09/02/90 85.6 86.4 05/30/90 71.1 07/17/90 76.2 09/03/90 85.4 05/31/90 72.5 07/18/90 78.4 09/04/90 86.7 06/01/90 71.6 07/19/90 79.5 09/05/90 87.3 06/02/90 71.1 07/20/90 80.3- 09/06/90 88.6 06/03/90 70.3 71.0 '07/21/90 79.8 09/07/90 86.-7 06/04/90 72.4 07/22/90 77.5 78.2 09/08/90 85.1 06/05/90 71.4 07/23/90 77.6 09/09/90- 85.0 86.4 i 06/06/90 -72.1 07/24/90 79.9 09/10/90 84.8

. 06/07/90 ;73.8 07/25/90 79.8 09/11/90 84,1 06/08/90 75.0 07/26/90 78.8 09/12/90 84.6 06/09/90 77.4 07/27/90 78.9 09/13/90 84.1 06/10/90 79.8 74.6 07/28/90 79.7 09/14/90 81.3 06/11/90 78.5~ 07/29/90 80.8 ~ 79.4- 09/15/90' 80.9 06/12/90 76.7 07/30/90 81.8 09/16/90 79.3 82.7 06/13/90. 78.1 - 07/31/90 82.0- 09/17/90 78 2

, 06/14/9G 80.3 08/01/90 83.0 09/18/90 77.9 l 06/15/90 82.5 08/02/90 83.1 09/19/90 75.8 06/16/90' 82.8 08/03/90 82.0 09/20/90 77.5

'06/17/90 83.5 80.4 08/04/90 R83.5 09/21/90 76.0

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(

Attschment 3 Y-93195 '

November 22, 1991 I

Manager-licensing & Safety V-920 Novernber 18, 1991 RE: Clinton Lake Sedimentation Survey Attached are the results of the Clinton Lake sedimentation survoy for 1991. Annual surveys are required by the CPS Environmental Report -

Operating License Stage (Section 6.1.6.8.7). This survey was conducted by EAD-Biological Progrann personnel according to Procedure EAD-FB9-1, Rev, 1 on October 31, 1991. Attaciunents include survey forms and sonar graph recordings conducted along .

north-south transects adjacent to the Parnell Road Bridge and the DeWitt County Highway 15 Dridge.

Two replicate recordings.were deterinined at each bridge.

54 f )?fY*

James A. Smithson Supervisor Biological Programs JAS/gw Attachments cc: Supervisor, Civil Structural, V-92g FDL File, T-33 4

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i Clinton Lake Sedimentation Survey Form Location h,p//_ )/ ,- . - hW ..ggf Date / 8 ',"$/ Y [  ;

lloight of Elevation Pin Above Unt.cr j k iA).

Depth of rathometer Traasducer Delow Surface f //t/,

. rathemeter settings . Elapsed Time'of let Recording $2 Wc .

Paper speed Q % ,- Elapsed Time of 2nd nocording _ _[d Gsc,

• Sensitivit.y b  ;

Suppression , n d-Y F

Gray Line d .

Surface Clutter Suppression M ._

1ulse Uldth -

66 _

Lower cepth Limit 30 ft.

Comments: g[pg (y 3gp / ,

wnud MJ/G- W f A ,

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Persons Con u' ting trvey*

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i Clinton Lake Sedimentation Survey Form Location gh$f,,f f 0 FYr) .

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sensitivity b _ ,

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'........ . . . . . . . . . . . . . ........ ,. Parnell Road Bridge Clintct Lake Sedimentatiton -

r---------

f Sedimentation Survey.  ;

gg g Survey. Replicate 1 Ecplicate 2 l

l October 31, 1991 j 10 october 31, 1991

. - . . - . I, i

Clinton Lake Sedimentation Survey at Parnell Road Bridge on October 31, 1991.

Double vertical lines indicate positions at north and south shorelines under the bridge.

Single vertical lines indicate piling locations; pilings are labeled at top of graphs by Roman numerals.

Depth range was set at 0-10 feet.

L l

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m i-m 4 ILLINDIS POWER E:!?* E'01-16ne noo sount 2rnt sinECT. P.o. DOX Si1. DECATUR II.uNOIS 6':525 1805 8F.130 January 16, 1991 Mr. John Bether U. S. Army Corps of Engineers Rock Island District Clock Tower Building P. O. Box 2004 Rock Island, Illinois 61204-2004 Dear Mr. Detkort Clinton Power Station Ultimate Heat Sink tredging Proicct l In accordance with notification requirements contained in Department of the Army Permit No. 18837Z, this letter serves to adviso the Corps of Engineers that Illinois Power Company has completed dredging operations at its Clinton Power Station Ultimato Heat Sink Reservoir as of January 7, 1991.

Approximately 70 % of the 352,000 cubic yards of dredge spoils were hydraulically removed and disposed of in a newly constructed 160-acre dredge disposal facility located in sections 27 and 34 of Township 20 North , Range 3 East of the DcWitt, Ill.

Quadrangle, DeWitt County, Illinois. Dredge spoils were deposited in the disposal facility and excess water discharged to Clinton Lake via a check dammed drainage di:ch.

If you have any questions or comments concerning this p.oject, please direct them to rac at 217/424-6592.

Y' H. E. Chanblin l

BETKER. HEC:cis l

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Attachment 5 ILLINDIS POWER M M22 ,_,,,_Lr 500 SOUD127Til STREET. P.o. DOX 511. DECATUR. ILLINOIS G25251605 8F.120 February 25, 1991 Mr. Bruce Yurdin Division of Water Pollution Control Watershed Unit, Permits Section Illinois Environmental Protection Agency E.O. Box 19276 Springfield, Illinois 62794-9276

Dear Mr. Yurdin:

Clinton Power Station Ultimate Heat Sink Dredge Disposal Impoundment Submittal of Abandonment Plan In accordance with Special Condition No. 5 of the operating permit (No. 1990-EA-0172) which authorired the use of the facility at the Clinton Power Station to dispaso of dredge material hydraulically removed from the U3thnate Heat Sink area of Clinton Lake, Illinvin Power (IP) would like to conclude this project by nubmitting an abandonment plan which outlines the future use of this facility.

Tne dredgLig operation began on October 4, 1990 and was concluded on December 19, 1990. Approximately 265,000 cubic yards of dredge material was removed from the lake. Further dredging is not expected to occur again for another eight to ten years.

In the interim period between dredging cperations, the Biological Programs Section of Illinois Power's Environmental Affairs Department _would like to manage the impoundment as a fish and waterfowl production facility. As a fish rearing facility, IP will er.sure that it does not rear more than the 20,000 pounds of nquatic animals (native fish species) per year. The water level will likely need to be drawn down periodically during the course of the operation, but it is not expected that the impoundment will discharge mcre than 30 days pe.~ vear. Any other discharge which might occur would ha related fr etteipitation causing an overflow. If makeup water is pumpeu tc the impoundment no direct discharge from the pond will result from l

I this action. Accordingly, IP does not feel it is necessary to

! obtain an NPLES permit for the purpose of raising fish as required by Section 503.101 of Subtitle E: Agriculture Pelated Pollution.

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In addition, the Biological Programs Section intends to operate this fish _ rearing impoundment as it does any other on the Clinton Power Station property. No artificial feed will dx: used.

If fis'.. management practices dictate manual draining of the pond, samples _would be collected to ensure water quality standards are not exceeded. At no time would a manual discharce be expected to result in a compromise of the environmental integrity of Clinton Lake since the dredge material has had time to precipitate and )

the water has clarified. l The waterfowl enhancement project will consist of bird nesting areas on the berms-which will be protected from predators. The potential also exists for including the 1111nois Department of Conservation in this project as management personnel.

IP requests that the Illino).s EPA review our proposed abandonment plan at the earliest opportunity. It is our intent to make arrangements to stock the impoundment with fish as soon as possible. Also, IP would like to_ cease the monitoring of the effluent discharge since the dredging operation was ccmpleted in mid-December.

Should any questions arise portaining to the contents of this letter, please refer them to Roger Cruse at telephone number 217/424-73"/6 at your convenience.

Sincerely, l

ILLINOIS POWER COMPANY rtW -

m Thomas L. Davis ,

Supervisor - Water Pollution Control l YURDIN.TLD:cis I